On 17/10/13 14:02, Laurent Pinchart wrote:

>> Okay, so if I understand correctly, translating those bindings to panel
>> nodes would look somewhat like this:
>>
>>      dc: display-controller {
>>              ports {
>>                      port at 0 {
>>                              remote-endpoint = <&panel>;
>>                      };
>>              };
>>      };
>>
>>      panel: panel {
>>              ports {
>>                      port at 0 {
>>                              remote-endpoint = <&dc>;
>>                      };
>>              };
>>      };
>>
>> The above leaves out any of the other, non-relevant properties. Does
>> that sound about right?
> 
> Yes it does.

It does?

Shouldn't it be something like:

panel {
        ports {
                port at 0 {
                        endpoint at 0 {
                                remote = <&dc>;
                        };
                };
        };
};

And simplified:

panel {
        port {
                endpoint at 0 {
                        remote = <&dc>;
                };
        };
};

You do need a node for the endpoint, a remote-endpoint property is not
enough.

> Please note that, when a device has as single port, the ports node can be 
> omitted, and the port doesn't need to be numbered. You would then end up with
> 
>       dc: display-controller {
>               port {
>                       remote-endpoint = <&panel>;
>               };
>       };
>  
>       panel: panel {
>               port {
>                       remote-endpoint = <&dc>;
>               };
>       };
> 
> I don't think there's a way to simplify it further.

I'm not sure if there's a specific need for the port or endpoint nodes
in cases like the above. Even if we have common properties describing
the endpoint, I guess they could just be in the parent node.

panel {
        remote = <&dc>;
        common-video-property = <asd>;
};

The above would imply one port and one endpoint. Would that work? If we
had a function like parse_endpoint(node), we could just point it to
either a real endpoint node, or to the device's node.

 Tomi


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